EPA finalises SNAP Rule 26

USA: The US Environmental Protection Agency (EPA) has released the pre-publication final SNAP Rule 26 which lists ten new A2L and A3 refrigerants.

SNAP Rule 26 lists HFC32, HFO1234YF, HFO1234ze, R454A, R454B, R454C, R455A, R457A, R516A, and R290 as acceptable for use in specific commercial refrigeration end uses.

The EPA has also increased the maximum charge size for R290 (propane) to 500g for open commercial refrigeration units and self-contained commercial ice machines stand-alone units, or roughly 300g for those with doors and drawers.

The official pre-publication rule can be accessed here. An EPA fact sheet offers a summary.